Step 4: Now launch SUT L3 on your computer. Once done, click on “Next” as shown in the screenshot below.

Step 5: In the next window, click on “…” button and choose the firmware file (.nb0 or .ffu file) of your device.

Step 6: Next, choose Enable “Emergency Download Process” under “Update Option“. Once done, switch off your Android smartphone or tablet and connect it to your computer using the original USB data cable. Now click on “Next” in SUT L3.

Step 7: SUT L3 or software update tool will start flashing firmware on your device and once it is finished, you will see the Green Pass message.